Zirconia Ceramic Sleeve
Zirconia Ceramic Sleeve, also known as zirconia ceramic bushing, are widely used in many industries.
ZrO2 Ceramic Sleeve
Compared with traditional metal bushings, zirconia ceramic bushings have higher mechanical strength and better corrosion resistance; at the same time, due to their low density and lightweight, they can reduce the overall mass and volume of the equipment, thereby reducing costs and improving efficiency. In addition, due to their good thermal conductivity and wear resistance, zirconia ceramic bushings can maintain high operating efficiency and reliability when used under high temperatures and high load conditions.
Zirconia ceramics are white and will appear yellow or gray when containing impurities. They generally contain HfO2 and are not easy to separate. There are three crystal states of pure ZrO2 at normal pressure: monoclinic zirconia (m-ZrO2), tetragonal zirconia (t-ZrO2), and cubic zirconia (c-ZrO2). The above three crystal forms exist in different temperature ranges and can be transformed into each other. In practical applications, to obtain the required crystal form and performance, different types of stabilizers are usually added to make different types of zirconia ceramics, such as partially stabilized zirconia (PSZ). When the stabilizer is CaO, MgO, or Y2O3, it is expressed as Ca-PSZ, Mg-PSZ, Y-PSZ, etc. Tetragonal zirconia composed of metastable t-ZrO2 is called tetragonal zirconia polycrystallite ceramics (Square zirconia polycrystallite, TZP). When the added stabilizer is Y2O3 or CeO2, it is expressed as Y-TZP, Ce-TZP, etc.
Material Performance of Zirconia Ceramic
| Physical Property | ||||
| Item | Unit | ZrO2-Y2O3 | ||
| Purity | \ | 94.40% | 94% | 94% |
| Color | \ | White | Black | Blue |
| Density | g/cm3 | 6 | 5.6 | 6 |
| Mechanical properties | ||||
| Bending strength (20℃) | MPa | 800 | 710 | 900 |
| Compressive strength (20℃) | MPa | 2000 | 2000 | 2000 |
| Elastic modulus (20℃) | GPa | 200 | 210 | 220 |
| Fracture toughness (20℃) | MPa m½ | 9 | 8 | 8 |
| Hardness (20℃) | HRA | 88 | 85 | 90 |
| Vickers hardness (HV1) | kg/mm2 | 1175 | 1100 | 1220 |
| Rockwell hardness (45N) | R45N | 78 | 75 | 78 |
| Thermal properties | ||||
| Coefficient of thermal expansion（20℃-1000℃） | 10-6K-1 | 9.6 | 9.5 | 10 |
| Thermal conductivity | W/(m·K) | 2.5 | 3 | 3 |
| Thermal shock stability | △T℃ | 250 | 300 | 300 |
| Specific heat capacity | J/g·k | 0.46 | 0.48 | 0.46 |
| Maximum operating temperature（in air） | ℃ | 800 | 800 | 800 |
| Electrical properties | ||||
| Volume resistance (20℃) | Ω·cm | 10^14 | 10^14 | 10^14 |
| Dielectric strength (insulation strength) | KV/mm | 13 | 13 | 13 |
| 1MHZ dielectric constant room temperature | 28 | 28 | 28 | |
Properties of zirconia
-High strength and hardness
ZrO2 Sleeve
-Good wear resistance
-Corrosion resistance
-Low thermal conductivity
-Smooth surface
Applications of Zirconia Ceramic Sleeve
-Zirconium oxide ceramic sleeves are widely used in the aerospace field. They can withstand extreme temperature changes and maintain stability and reliability in high-temperature environments; at the same time, they also have good corrosion resistance and can withstand harsh environmental conditions. Using this material allows aircraft to fly at higher temperatures, improving the safety and stability of flight.
-ZrO2 sleeves are also widely used in the petrochemical industry. Due to this material’s extremely high chemical resistance, it can be used to manufacture acid-resistant and alkali-resistant pipes and equipment, thereby protecting equipment and personnel from the erosion of harmful substances. In addition, the strength of ZrO2 ceramic sleeves is also very high. It can withstand high-pressure and high-pressure environments, so they also play an important role in oil and gas exploration and production processes.
– ZrO2 ceramic sleeves are also widely used in medicine. Due to its high-strength properties, it is used to make medical devices such as artificial joints and dental restorations. These medical devices can provide better function and comfort and reduce surgical risks and recovery time.
Packing of zirconia ceramic sleeve
Our Zirconia Ceramic Sleeves are carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
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